Who knows how a product that's not even on the market yet will work! Sure, we can see some sample images made under ideal conditions and carefully for advance promotion of the lens. But that doesn't tell us about a lot of things, such as how it handles, it's AF performance, if Hybrid-IS has any quirks (not that Canon would ever release a product with any quirks
), etc.
Why not try the current 100/2.8 macro instead of the new L version?
It's a good, dual purpose lens. Especially if you use the focus limiter switch properly, the AF is plenty fast to use it as a short tele lens at non-macro distances. It's much better for non-macro shooting, for example, than the 180mm Macro. That's more of a specialty lens.
Yes, the max aperture is f2.8. But, depending upon the distances you are working... how close you are to your subject and how far they are from the background behind them, you can still get darned nice background blur with f2.8.
There are a lot of 100/2.8 USM showing up for sale right now, as people sell them preparing to buy the new lens. Prices will probably drop on the current lens, then rebound because it's still and excellent piece of equipment. It's near L quality in build and has excellent image quality. If anything, it might be too sharp for some types of portraits. (I wouldn't recommend the earlier, non-USM 100/2.8 as highly as a dual purpose lens... It auto focuses more slowly.)
The 85/1.2 II has slower AF and is more of a specialized "portraits only" lens. It doesn't focus particularly close. Not to say that the f1.2 lens isn't fabulous, just that it's very uncompromising. The far less expensive 85/1.8 is more versatile. It can do near macro work with some extension tubes behind it, if you need it to. It's a fine portrait lens, too.
The 135/2L was my first lens addition after I got my full frame camera. I'd highly recommend it, too. I've just been using it a couple months, but it's got my attention. Great lens, and works well with some extension tubes for near macro shooting, as well.