PSA: Epson releases 2 4k projectors for under $3k
Epson Introduces World's First 3LCD Projectors with 4K UHD Signal Input and HDR for Under $3,000
Note that this is 4k e-shift, but according to Projectorn Central, the differene is indiscernible.
Projector Central's announcement and notes including 2 other models:
One option is the cheaper 4040
Epson Pro Cinema 4040 ($2,699). Same features and distribution as 6040UB, but with moderately reduced performance (2300 lumens instead of 2500, and 160,000:1 contrast)