partitioning - Will Ubuntu 15.04 create a swap partition with the default installation?

I am going to install a fresh Ubuntu 15.04 on a Lenovo X1 Carbon. I plan to select the default Erase disk and install Ubuntu option and tick both Encrypt the new Ubuntu installation for security and Use LVM... options.

Last time I installed a 14.04 like this, there was no swap partition created automatically. It's a pain to add it later. Will 15.04 do that out of the box?

Yes, it does. Ubuntu always creates a swap partition if you choose automatic install.

And it is not pain to add a swap partition. It is quite easy to do.