URL and search bar entry has been consolidated. Type in a URL and you go to the site; type in a search query and you go to your preferred search engine page. Cool.

Finally. I've had a SIMBL plugin do this for me for like 2+ years. Got tired of updating it every time Apple updated Safari.

Apple giveth and Apple taketh away. Font control is no more.

Also wondering why they separated the calendar and to-dos? Maybe something I'll understand if/when I ever start using an iPhone and/or iPad.

I kind of "get" removing font control. As fonts on the web are now a reality, Apple is actually doing website owners and users a favor.

You can still add a simple stylesheet to switch the font to whatever you want - it's just a bit more of a pain for average consumers. But those are exactly the people who will benefit from websites which use specific fonts – such as this wonderful site I know of

What I DON'T get is why Apple removed all support for RSS. It's nowhere near as popular as it was a few years ago, it's still widely used. Forcing users to add an RSS extension to Safari just to subscribe to an RSS feed is annoying.

As for Reminders and Calendar... I'm finding that I actually like them split. I have an iPhone, so I'm used to them being separate. But even without the iPhone, I never liked the way Notes were found in Mail, reminders and calendar items were buried in iCal - out of sight, out of mind. The new versions of Notes and Reminders are tiny apps that you can keep open in the corner of your screen if you want.

Dude.. that's a pretty decent site. Where'd you find that?

No more Activity window.

Ya wanna see an activity window.... come watch my neighbors house...

Safari > Preferences > Advanced > Show Develop menu in menu bar

Yep, I've always had the Develop menu, but I no see Activity…
Not that I used it very often, but it was great for downloading YouTube videos.
Haven't figured it out with the other options listed.
YouTube Safari Extensions have helped, but you know, old habits…

Show Web Inspector in Develop menu?