Does anyone know if MLB has officially ruled out "fans in the stands" for Spring Training? I know that Arizona had been allowing some for the NFL, but I dont think any have been allowed for NBA/NHL.

I went down to Glendale the last week of February in 2020.  That was my first time at spring training.  I really enjoyed it and was very glad to have experienced that.  I nwas able to see 5 Sox games.  I hope I can do it again this year.

Last I saw, there was talk of allowing fans in "pod" seating with groups socially distanced.  Local regulations may be stricter, but it certainly sounds like MLB wants to have fans able to attend spring training games.