Hello,
Sure it's possible.
Thanks to commercial editions of HikaShop ; you can create a discount for a specific product and use restriction date.
So, you will have a discount for a limited period of time.
Afterwards, in HikaShop 3.3 ; a new feature has been added which allow to configure dates on product price.
So you can set-up a price until a date and a different price starting from the same date.
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.