FSD Release Tracker

A streamlined tracker for Tesla FSD (Supervised), active software branches, hardware paths, rollout status, and the current v15 outlook.

Last UpdatedSeptember 13, 2026 • 7:17 AM ET
Newest FSD Software2026.27.6
Newest Full FSDv14.3.9
Rollout StatusEarly / Limited
Latest • September 13, 2026

2026.27.6 + FSD (Supervised) v14.3.9

Newest FSD branch now rolling out

FSD (Supervised) v14.3.9 is rolling out in 2026.27.6, first noticed around September 8. The release remains in early / limited waves, with Teslascope share still under 1%.

Headline addition: Automatic Collision Evasion (ACE). FSD can engage on its own during manual driving if a collision appears imminent or the driver appears inattentive.

HW4 / AI4: v14.3.9 HW3: v14.2 Lite Early / limited waves
Active Software

Current Versions That Matter

2026.27.6
FSD v14.3.9 (HW4) + v14.2 Lite (HW3)
Newest FSD branch. Early rollout with Teslascope share under 1%.
2026.26.6.5
FSD v14.3.8 (HW4) + v14.1 Lite (HW3)
Still the main widespread FSD build and the version many vehicles remain on.
2026.32.3
Newer vehicle software branch
Includes newer non-FSD software features such as browser ad blocking, but it is not the main FSD line.
Fading branches: 2026.21.6 and 2026.20.6.11 are increasingly being superseded. There is still no customer v14.4 or v15 rollout.
FSD v15 • Outlook

Customer Release Prediction

Overall confidence: ~85–95% that v15 will reach customer vehicles. Most likely window: late 2026 (Q4) to early 2027 (Q1).
Next 1–2 months<15%Unlikely — Tesla is still expanding v14.3.9 and refining the 14.3 line.
Q4 202645–60%Possible for limited or early customer access if validation stays on track.
Late 2026 – Early 202770–85%Most realistic official target window.
By Mid-202790%+High probability even with moderate delays.

Ashok Elluswamy has said v15 will add earlier hazard prediction, faster reaction, and better collision avoidance. Early builds remain limited to the Robotaxi fleet. HW4 / AI4 is the customer hardware path for v15; HW3 will not receive it. No customer rollout has started, and the late-2026 / early-2027 target remains unchanged.

Hardware Paths

HW4 vs HW3

HW4 / AI4: The newest path is full FSD v14.3.9 on 2026.27.6. Most vehicles may still be on v14.3.8 while the newer branch remains limited.

HW3: The newest relevant branch moves to v14.2 Lite on 2026.27.6, while many vehicles remain on v14.1 Lite. HW3 is not on the v15 path.

New Safety Feature

Automatic Collision Evasion

ACE is the standout addition tied to the newest rollout. It can allow FSD to intervene during manual driving when the system detects an imminent collision risk or apparent driver inattention.

This makes v14.3.9 more notable than a routine point release even though the rollout is still very small.

Recent Progression

Release Timeline

Sept. 13, 2026
v14.3.9 remains in early rollout
2026.27.6 is the newest FSD branch, while 2026.26.6.5 / v14.3.8 remains the widespread build.
Around Sept. 8, 2026
2026.27.6 + FSD v14.3.9 first appears
HW4 receives v14.3.9, HW3 moves to v14.2 Lite, and Automatic Collision Evasion becomes the headline addition.
Aug. 31, 2026
2026.26.6.5 + FSD v14.3.8 reaches wide deployment
The branch becomes the dominant widespread FSD release before the newer 2026.27.6 line appears.
Availability

What To Check On Your Vehicle

Rollout timing varies by vehicle hardware, VIN grouping, region, software branch, and FSD eligibility. The newest branch can remain unavailable even while an older version is widely deployed.

Model SModel 3Model XModel YCybertruck
Safety + Verification

Current Snapshot

FSD (Supervised) requires constant driver attention and is not autonomous. Tesla can pause, accelerate, or redirect deployments by VIN group at any time.

Current tracker snapshot: 2026.27.6 / FSD v14.3.9 is the newest FSD branch, but 2026.26.6.5 / v14.3.8 remains the widespread build. No customer v14.4 or v15 rollout has started. Sources are primarily aggregated from Tesla release notes, Teslascope, Not a Tesla App, Tesla engineering comments, briefings, and owner reports. Rollout percentages and branch status can change quickly. Updated September 13, 2026 at 7:17 AM ET.