Looks like the backdoor roth will still be good for 2017.

If you're above the roth contribution income limits, it works like this:

1. Contribute to Traditional IRA
2. Convert (not recharacterize) to Roth IRA.

https://www.irs.gov/retirement-plans/retirement-plans-faqs-regarding-iras-recharacterization-of-roth-rollovers-and-conversions