In an amendment to those initial details, FV83.5 is now set to race at the Circuit of the Americas rather than Fuji.
Japan had initially been favoured over Austin as it provided a more even spacing of rounds over the year.
But concerns over logistic issues related to shipping equipment from Japan in time for the Bahrain final were a deciding factor in opting for Austin.
FV8 3.5 teams had their first opportunityto meet with FIA WEC CEO Gerard Neveu for a meeting in Monza on Friday.
Details of the arrangements that WEC partner DHL will provide in 2017 formed the central topic.
FV8 3.5 teams will race at the Nurburgring on a Saturday next year. Containers will arrive on the Sunday, to be loaded for Monday and then sent to Mexico by sea freight.
Following the Mexico City round, teams' equipment will be driven overland to Texas.
The freight costs for nine teams will be paid for by series promoter RPM and the WEC, with the eight participating teams in this year's championship receiving priority status for 2017 entry slots.
The series will remain in Bahrain after the final round. The top-three drivers in the championship will receive prize WEC tests; the champion an outing with an LMP1 manufacturer team; the runner-up an LMP2 test and the third in the drivers' standings will sample either an LMP2 or GTE car.
There will then be a three-day FV8 3.5 test. It has been confirmed that this year's rookie test will be held at Jerez on December 5th.
AUTOSPORT SAYS Peter Mills, FV8 3.5 correspondent
Teams gave a favourable response to their first meeting with Gerard Neveu. Although the details could have been sent by e-mail, championship promoter RPM thought it would be an opportunity for team representatives to speak to Neveu in person about the series' new direction on the WEC package.
It was also reported that collaboration between RPM and the WEC's technical and sporting departments has been established, and a working group between teams and the organiser will come into effect next season.
Teams were also shown clips from the Mexico and Nurburgring WEC rounds. The extra expense of airline tickets for team personnel to travel to Mexico over Bahrain over a conventional European FV8 3.5 meeting is thought to be worthwhile when offset against the larger show provided by WEC.
FV8 3.5 has an asset in developing its relationship with the WEC in that all of its suppliers, Dallara, Gibson and Michelin, will be involved in LMP2 next year.
The 2015 Formula Renault 3.5 season will be notable for being the last with the French company's backing but also produced a worthy champion in Oliver Rowland. PETER MILLS evaluates this year's crop of drivers
Last year's field was extraordinary and hard to match, but the Formula Renault 3.5 grid will still have plenty of talent this season. Glenn Freeman runs through the field ahead of this weekend's season opener
Landing the Fortec seat that took rising star Robin Frijns to the 2012 FR3.5 title was already a good sign for Stoffel Vandoorne. Then McLaren took him under its wing. Peter Mills tells Vandoorne's story so far