Did you check your inbox? I checked mine and found a nice surprise inside.Hmm...I've used the moo calculator some months ago (https://steam-deck-calculator.web.app/), and it said (and still says) my expected date is upcoming monday (23/5).
Now I tried the hoxeel calculator (https://replit.com/@jplayzgamegm/SDDC?v=1) and it puts me at 30/5.
Though the former has more data points to extrapolate from (whee ), both are still at best estimates. Either way...It's time to watch my mailbox more closely now.
The calculator (Moo's) seems quite precise.