DoomRL v0.9.8.10 has been released.
Changes (read full list here):

Major visible features include a complete revamp of the inventory UI, and the addition of several inventory related stuff (two additional inventory slots too!). Among the crowd, finally the long awaited Revenant makes it's appearance. Two new special levels will haunt your nightmares.

Finally items have been extended with the addition of enviro-suits. And hell, you'll need them -- lava and acid damage has been increased significantly. Also walls and other impassable dungeon features now have incremental damage.

Except that there are several modifications -- most of them you can read at official announce page.

More changes with the API -- I don't want to rush the mod-capable release, but it's almost there.

Finally, a TON of bugfixes were made.

Player.dat's and score.dat's should be compatible!