Just saw this on AARoads: https://www.aaroads.com/forum/index.php?topic=11707.msg2352462#msg2352462
A quick update (no photos yet):
The I-95/PA 413 interchange is now Exit 39 from I-95 northbound (was Exit 40). Along what is now I-295 westbound, the exit number still says 40, but there are other overhead signs that are covered that look like they refer to the same exit. I wonder if they will carry the I-95 exit (39) or be I-295 Exit 1, since the proposed ramp exits prior to the I-95 merge.
That interchange is now also I-95 exit 39 SB. I took a photo (still in my camera, but other people's photos from the Golden Spike meet might go on aaroads sooner than mine).
There is an exit 1 at the south end of I-295, marked as "To PA 413". But that is for a ramp for traffic from I-295 to PA 413, to get around the SB I-95 flyover, so it need not fight through SB I-95 traffic to get to I-95 exit 39. I don't recall seeing a corresponding bypass ramp for NB I-95 traffic, possibly because the first I-295 exit is nowhere near as close to the PA Turnpike as the exit for PA 413. HB doesn't have an exit 1 (or otherwise numbered) in the existing I-95 file north of the PA Turnpike, that will become the PA I-295 file. I think we should not add one.
A project official explained that the PA 413 interchange was renumbered because the 40 number is needed for the I-95/I-276/I-295 interchange, in which 276 will be treated as a left exit from SB I-95. I don't recall seeing signage at that new interchange for 276's exit number. I went back there this morning, I saw two covered-up signs confirming that 276 will be a left exit, but no clue what the number will be.
EDIT: I didn't re-travel I-95 north of PA 413, to recheck the signage between there and the PA Turnpike. I don't know for sure that I-295 will be treated as a left exit from NB I-95, or that it will be numbered as exit 40 too, though that would be my guess as well.
The new exit number on the part of I-276 being transferred to I-95 was mentioned, and I think it was 358 -> 42. That exit number change will cause less heartburn than the 39/40 changes, since 40 is a point in use on I-95 and is being moved.
BTW, the meet included escorted drives on the new SB and NB flyovers connecting I-95 with the to-be-former I-276 segment (basically complete, just some finishing work needed before opening). So maybe I can count that as clinched-in-advance, without going back there for the official opening to maintain my I-95 clinch.