I'd be shocked outta my sarongs if there was a 'current' version. No reference to it at Tascam.com, and the most recent reference to it my google-ing turned up was almost 20 years old and had no active link to access it...
EDIT: turns out that s/ware company is attempting a revival - this website shows that they're planning on developing/releasing software, though it doesn't say for what. It also expressly states they are not going to sell "current" software, which suggests they're "redeveloping" it - presumably for current/modern O/S's...