looks pretty good from a scan of it/specs
what I don't understand with Roland and Tascam though is why they need to come out with a new recorder over and over??
IMO if you get it right like the Sony M10 you are golden, seems these two brands are constantly releasing something new.
My thoughts are that Sony may have discontinued the M10 because journalists increasingly used their smartphones as audio/video recorders which probably hurt M10 sales. Sony makes so many different products that the M10 may not have been financially significant to Sony even though it was practically significant to many on TS for its quality, size, and battery life.
I suspect Tascam offers a wide variety of audio recorders at different price points because they are trying to capture as many sales of audio recorders at as many price points as they can. If they release a recorder with upgraded features, existing customers may want to upgrade giving Tascam the opportunity for another sale.
I'm glad to see the Roland R-07 and hope it will be a competent replacement if my m10 stops working. Maybe the 07 battery life is longer if bluetooth is turned off, but if it will reliably run on a set of AA rechargeables for even say 8-10 hours, then that's long enough for most people and then a fresh set of AAs can be installed.
The bluetooth control could potentially be useful for remote control and a better view of the meters, too. And the opportunity for bluetooth playback is something I hadn't considered before, but I think rigpimp has a good point.