There's not much to say here.
My expectation for 2010 aren't very high this time. The new skill doesn't seem very exciting at the moment and I can't think of anything revolutionary that they will add in the future.
This year we've had good updates but the majority of them were bad, in my opinion.
I loved the Christmas event, but didn't like Halloween very much along Easter's event.
The ivy addition to woodcutting was horrible, just terrible. Woodcutting was fine how it was and now they've made it far too easy just like cooking and fletching.
The objective and advisor systems seem pointless to me, but I guess it can help people that can't set their goals.
I can't remember if the notes system was added this year... Assuming it was this year, I liked it. I could finally free my ignore list (I used it as my notepad)

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The machinima competition was great, although I wasn't accepted, I liked watching entries from other people.
The adventurer's log, great addition!
Runescape Brazil - I won't even comment this... Thanks for not making a Portuguese version jagex.
And finally: The runescape classic re-opening. It was a great idea to allow new players who never played classic to try it out, nice move.
Can't remember any more highlights...
Probably mobilising armies, but never tried it...