Why Browser Versions Are Jumping to 100 and What It Means for Developers

WeChat tests a “10‑5” work schedule

Some departments in Tencent’s WeChat Business Group have started a “10‑5” work system, with work hours from 10 am to 6 pm, five days a week, currently in trial after the Lunar New Year. Employees report that other units still have varied hours, with some still working late into the night.

Leaders are required to leave by 6 pm, and staff must be out by 10 pm, enforced by security. Some teams have a 7 pm cutoff for leaders and a 10 pm latest departure for members. The policy is not yet officially announced via email.

Workers say the new schedule has improved their sense of well‑being and reduced turnover intentions.

Mozilla seeks new revenue streams

Firefox now serves only about 4 % of web browsers, far below its 10‑year‑ago claim of 20 %. Consequently, Mozilla’s income and staff have declined. A large part of its revenue comes from a marketing deal with Google worth roughly $400 million per year, which is unsustainable. Mozilla’s first true profit‑generating service, Mozilla VPN, now charges $10 per month.

Chrome and Firefox prepare version 100

Both Google Chrome (scheduled for 29 March) and Mozilla Firefox (scheduled for 3 May) will release version 100, breaking the two‑digit version convention. This may cause problems for sites that hard‑code assumptions about User‑Agent strings. Developers are advised to test their User‑Agent parsing libraries against three‑digit version numbers.

For Firefox Nightly, open Settings, search “Firefox 100”, and enable the “Firefox 100 User‑Agent String” option. For Chrome, navigate to chrome://flags/#force-major-version-to-100 and enable the flag.

Website owners should verify that their User‑Agent detection code handles version numbers ≥ 100, and library authors should add tests for such cases.