The rumor mill has two sets of very similar Galaxy phones, both with Infinity Displays, so an invite for an upcoming event can be read in one of three ways Samsung will launch the Galaxy A6 duo in India, it will unveil the Galaxy J6 and J4 or do both.
The Galaxy A6 (2018) and Galaxy A6+ (2018) have already been announced for other markets. They mirror the Galaxy S9 duo, though at a smaller scale both in terms of physical size and cost. They are expected to cost between INR 20,000 and INR 25,000.
These two along with the new J-phones will be Made in India as the country is considering raising import duties on smartphones (mainly aimed at Chinese brands, but others will be affected as well).
Samsung Galaxy J6 (2018) leaked official images
Anyway, the Galaxy J6 is similar to the A6 (2018), it has the same screen and chipset, though other specs are scaled further back. The Galaxy J4 may be the only one of the four not to feature an Infinity Display, opting instead for a standard 5.5 720p panel. And it will use a different chipset.
The Galaxy A6 and A6+ will soon launch in Europe at 310 and 370 respectively. The Galaxy J6 is expected to join them at 250.
Source 1 | Source 2 (in German)