Can married couples have two ROTH IRA and file jointly?

My wife and I have a Roth IRA that I opened several years ago before we got married. This Roth IRA is under my name. Being that you can only contribute $5000 this year for one account; we were thinking about opening another Roth IRA under her name and start contributing up to $5000 and have two Roth IRA where we could double our contributions. We have already filled our taxes this year but if we do this now could we still file our taxes next year as married??