I'd agree that the present state of the world with respect to bottom brackets is horrendously confusing.

The good news is that a Shimano crankset can be fitted to pretty well anything with the right adapters.

For me there is an order of preference for the different types of adapter available.

1. Threaded, and on most frames today it's English.
2. BB86 is a Shimano pressed-in standard.
3. BB30
4. PF30
5. BBright is Cervelo's proprietary standard.

There's plenty of articles on the differences. Google is your friend.

 

I think I found what I was looking for.

Ultegra BB-6800 is English or Italian threaded. I also googled SH-BBR60, its English or Italian threaded Shimano BB. I think its the same thing as BB6800

I guess the new frame I'll order with BSA.

 

Here's a good reference to the different press-fit/pressed-in standards.
http://problemsolversbike.com/files/tech/Bottom_Bracket_Standards_Reference.pdf

As far as English vs. Italian. If a crank works for one, it'll work for both. The bottom bracket is different. For example the Shimano HollowTech II style BBs (modern day cranks) can be bought in English or Italian threaded. Same from SRAM GXP. The same crank is installed on the bottom bracket, you just need the correct one for the frame. That being said almost no one uses Italian standard these days. I have a 2008 Bianchi and the BB is english threaded, even though the headset is the "Campy" standard.