Hi,
We can't provide any schedule for the payment plugin implementation.
We currently have more than 60 plugins in the list so it could take some time.
You can still contact some externals developers, some HikaShop partners or create a post in the "commercial jobs" section of that forum.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.