Some interesting thoughts on the new ship...
-It's shorter than the OT ship. Snubbier in the nose. Or so it seems anyway, but it definitely looks a little stumpier with a possibly elongated nosecone. I don't know what level of effort they're putting into this but in the EU the nosecone housed a lot of the sensors for the OT ship so a larger one is kind of neat to see from a techno babble POV.
-The Landing gear on the wing has as little place to go as on the OT ship, haha.
-The ladder has a door for it to swing into the hull somehow it appears (the ladders on the old one have always been a mystery). There are also hand holds on the hull now, replacing the need for a "full" ladder up to the cockpit.
-The cockpit itself looked incredibly identical... That's pretty neat.
-No Astromech can be seen, but the shot doesn't pan backwards enough to see if a port exists even.
-The rear of the hull slopes backward... Sleeker looking for sure, and pretty different from the bulky hexagonal shape of the original ship's rear hull.
-The wing mechanism still looks confusing but the guns at the wing tips show that the top gun fits inside the lower gun's wing mount somehow. There's a curve there... It'd limit the thickness of the wings presumably. Interesting. It looks more now like it splits at the engine too, but it's still hard to see.
-I love it.

I really do... I'd buy a scale version of that in a heartbeat. Not to mention that, and I pray this occurs, but that Pilot's suit over the boots is so much cooler looking and I hope that sticks. Reminds me of pilots in flight suits in our modern military... I hope that remains, and we get a nice, awesome, cool figure of a pilot.
But yeah, I love it... I love the updates. I love the McQuarrie-ish stylings. I love it all. Taking what's old and making it what's actually new and improved. Pretty shrewd and smart of Abrams IMO.
Oh yeah, and the cargo hold under (and behind?) the cockpit seating area is still there ala the OT. Very cool.