You can also add emails to a trip (a top feature request!) using the Move to... menu, and view trips offline—perfect for when you're on a plane or using spotty WiFi.

While you're traveling, you might end up taking a lot of photos. Improved mobile attachments give you quick access to your recent photos, and let you attach multiple photos at once.
These new features will be rolling out over the next week. Happy holidays!

Reminders help with the details
Another way Reminders are more useful than events is that Calendar adds things like phone numbers and addresses automatically. So if you add a Reminder to make a call or run an errand, the number or address will be right there when you need it. Just like Inbox by Gmail, Calendar uses information from your contacts, as well as Google's knowledge graph to provide this extra bit of help.
Reminders work across Google
You can also create Reminders from Inbox, Keep, and Google Now. This means you can create a Reminder when you're checking your email and it will show up on your calendar right away. Plans change? Just move the Reminder to a better time. Or if your hands are full, you can record your Reminders in Google Now一like, "Ok Google, remind me to buy birthday candles"一then mark it as done later in Calendar.
Reminders will be rolling out this week with the latest versions of Calendar on Google Play and the App Store. And don't worry, we're working on bringing Reminders to the web as well.