The Feature
Summer ‘26 adds single-component preview for LWC in browser or VS Code. No deploying to scratch org to see how a component renders. Change code, see result in seconds.
Why Developers Care
The LWC inner loop was slow — every visual tweak required scratch-org push. Velocity suffered. Browser/VS Code preview matches the experience React/Vue developers have had for years.
Limits
Single component, not full org context. Integration-heavy components (record page layouts, data from wire services) still need a real org for full testing. Unit tests and browser preview cover most iteration; org testing remains for final validation.
Adoption
Enable in your VS Code settings post-upgrade. Onboard team via quick demo. The time-savings compound — developers who use it iterate 2–3× faster on UI work. Worth integrating into your standard dev loop immediately.