Most likely, considering that so far alignment is a flavor concept that doesn't affect any game mechanics.Paladin has always been my favorite class since 1st edition. I expect this to continue in 5th edition.
I'm curious about their Oaths though. Are Oaths tied to Alignment? Can there be Lawful Good Vengeance Paladins, or is the Vengeance Oath only for non LG Paladins?