hmm, another 30w 4x EL84 amp from Orange - does the world need that? (or even Orange themselves for that matter).
If it was the same amp as the TT but with a 30w output stage, it could be quite cool BUT I think it'd need to have some extra bells and whistles to make it worthwhile (more gain, tonestack, effects loop).
I can't fathom Orange's thinking on this one unless their customer feedback shows demand for a louder TT. I'm not familiar enough with Orange amps to know how the TT sounds compared to the classic Orange amps in terms of tone.
All that said though, the louder amps generally have more to them in terms of circuit design - there is something to be said for a bare-bones preamp into a louder output stage (like what people have done with the 5E3 Tweed Deluxe with the 4x 6V6 output stage)