The old sign-up created an empty account and left you to work out the rest. The new one asks what you do, and sets things up accordingly.
A Few Questions, in Order
Account, business details, market and location, sector and what you want to start with — each on its own step, with progress shown.
Set Up for Where You Operate
Your market and location determine tax, currency and locale from the start, rather than being corrected later.
Start With What You Need
Choosing what you want first means the account opens on that, instead of on a dashboard of things you have not set up yet.