The IRS has recently issued Revenue Procedure 2017-37, which provides the 2018 cost-of-living contribution and coverage adjustments for HSAs, as required under Code Section 223(g).
Annual HSA Contribution Limits
Annual Maximum Out-Of-Pocket Limits for HDHP
Annual Minimum Deductible Amount Limits for HDHPs
For a copy of Revenue Procedure 2017-37 visit: https://www.irs.gov/pub/irs-drop/rp-17-37.pdf