Firstly OP, they look OK to me, tho with only the one angle, it doesn't give too much away. If you want to take critique pics, check out the link in my signature for some good tips.
Originally Posted by Pyrrhic
It is an improvement and you're right that his heels are a bit tight, but they aren't too bad. It'd be nice to see more concavity in the sole, but the frog is nice and big and the sulcus looks good. There's a lot of white line separation, which you need to keep an eye on as he could develop laminitus. Can I ask why you had the toe rolled so much?
I don't think it looks like his heels are 'tight' or contracted. Concavity in the sole develops with foot health & is an individual thing, so not all horses/breeds should be as concave as some.
'White lines' don't look actually separated to me, but are obviously stretched, mostly at the toes. This can be *because* of laminitis. That is the reason why the toes needed to be brought back so much, to relieve the leverage pressure on the laminae that the excess length causes.