We are implementing this with two new pricing regions: LATAM-USD (which includes Argentina) and MENA-USD (which includes Turkey)
The prices will be denominated in USD. But unique to the region. Unless the developer is lazy and doesn't set a price for the newly created regions.
Depends on what price the developer chooses and how stable the exchange rate between USD & the local currency is. If the currency gets weaker and weaker compared to the dollar, then the real price that locals are paying will go up.
And, I'm pretty sure that local inflation rates are the primary driver of this change. So, yeah, games will likely get more expensive as inflation continues & developers don't constantly update the USD list price.