Pretty much a day or two after the hitsplat change came out, I decided to start working on a new kit so they're still possible to fake. That involved a lot of screenshotting and experimenting. Now, if the stuff here looks like the stuff you see in RuneWiki's Hitsplat article, it's because I put it there
(well, they had a few splats before I came along, but some were flawed - one guy thought that the healing splat is just a purple recolor of the damage splat 
. Also, none of their splats had any shadows). Anyways, here's the kit:
Yeah, it covers a lot
. If that's too much to be of use to some of you, feel free to use the condensed version:
But if you get confused with anything, please refer to the "Notes on Alignment and Making Splats" section of the large kit - it covers virtually everything. Also, you may look at "Miscellaneous Sample Hitsplats" and think "hey, some of these look wrong", but I actually compared them to many hits ingame - the horizontal alignment rules aren't really as simple as I make it seem in the notes section, but I didn't want to make them even longer.
Note that in order to use this kit correctly, you have to rightclick -> Save Image As.. the kit (copy/paste will make the transparency become solid black if you're using Firefox), and you have to use a graphical editor that can use transparency (otherwise you can't fake the transparent shadows around the splats correctly).
Anyways, the font I refer to in the kit for maxed hits can be downloaded here, and its FontStruct page is here.