He's just saying he installed the official HTC update that MoDaCo leaked a few weeks ago. Now he wants to go MoDaCo (perhaps because it's prerooted, installs apps on the sd and so on). He is just wondering whether it's a good idea, if 1.6 is released very soon.
No, 1.6 will not be released very soon (at least not as a HTC Hero Rom), so go ahead and flash with MoDaCo, if you feel you need it. Your phone won't get much faster than with the official update, but at least you'll have something to play around with.