Any one has kids with developmental delays? Do they catch up and outgrow eventually ?

The only real concern is the global development delay which is a "sickness" in itself and it need early identification and intervention and such kids will be v v difficult to ever catch up because they are special needs. Other than that some babies are just faster in some areas and slower in others but all of them will somewhat catch up. Keep the long term view in perspective, most of the primary 1 kids are all about the same already in most aspects - with some slightly better in certain areas but generally not much diff