This isn't editing.
1) Much of the rules are moved off to an area outside the spell effect (definition of 'conjuration' and 'zone'). Nothing wrong with that, but its the opposite of what they are doing with monsters.
2) The changes to the system give the spell less to do. Additionally, they made the decision to narrow the spells effect. For example, you can't use this to prevent a wizard from flying or turning invisible.
3) The spell has lost much of its versatility. It no longer can be used to area dispel, counterspell, or supress a magic item. So yes, with less than 1/3rd the applications of the original spell, it is much shorter.
4) Some of the text of the 3rd edition version is limitations to reduce the potential for such a powerful and useful spell being abusable. Since the spell has now been nerfed, these limitations are no longer necessary and can be ignored.
So, yes, its shorter, but I'm not necessarily sure that that is something you should be bragging about. It's shorter mainly because it does so much less, and not because the same effect is described more cleanly.