Looks like Thurs for 2.5

[Slomo4shO-1943]

@TanisGunthar-1764

Seen on Twitter, about 3 hour maintenance on Thursday. Figure 2.5 dropping.

PTR ends on the 19th, Ladder Session 1 ends and session 2 starts October 6th.

It was literally a part of the update from Thursday…

Diablo II: Resurrected PTR 2.5—Terror Zones Now Live

Update on September 15: Content changes have gone live for the PTR 2.5 testing period. These changes are indicated in red text. The PTR will end on September 19 at 10:00 a.m. PDT.

The flames of the Burning Hells have forecasted the future, hero: Ladder Season Two will begin on October 6. Additional details on Ladder Season Two, including launch timing, will be communicated in an upcoming Diablo II: Resurrected blog. We cannot wait for players to begin the race to collect loads of experience and loot while slaying demons and climbing the leaderboard!

There was also this hint from 2 weeks

@PezRadar

The current order of operation is that we will end PTR here soon and start submission for final builds on 2.5 and get out that to everyone on the live environment. Season 1 to Season 2 will happen fairly immediately. We expect S2 to start a week or two after 2.5 hits so we have a date that everyone is aligned on and knows about. S1 will literally end the second we transition to S2.