Wait for the stock to arrive. Do you need it urgently? In the meantime, go to Yamaha and try out the CP series as a comparison.
Bombthebasses, I initially thought the same, that keyboards are reaching it's developmental plateau. I mean, how much can they improve? I do agree, that further improvements now will not be the same as in the past. Breakthroughs in new technologies will be rare. But sometimes we do get surprises. Actually, I'm pleasantly surprised at the latest Roland RD series, and most of their latest keyboards for that matter. In the past, I love the Roland sound but I like the Yamaha touch better. Today, it's a no-brainer for me. Roland's touch has advanced tremendously. Roland's Supernatural sounds are really excellent as well that I'm slowly using less of my samples during live playing.
Furthermore, I'm finding the Roland RD's keys not only weighted just right, it's also responsive enough to play organ sounds and glissandos comfortably. Not as great as the V-Combo, but good enough. in the past, weighted keys and B3 are simply not synonymous (doesn't matter which brand it is). They were nice to play grand piano sounds, but just not quick enough for B3 (massive glissandos, demi-semiquavers on the same note etc). Things are changing, yet again.