Was just going to post this.
It's not just news about the G, this article is chock full of information of Infiniti's plans for the near future. Big thing here is the new V6 for the next-gen G is going to developed completely in-house by Nissan based off their classic VQ architecture.
Also, on the Mercedes-Infiniti partnership front, it looks like the main ties will be the 4-cylinder diesel for the European market as well as some platform sharing for the next G and C-classes, as well as an Infiniti C-class hatchback for the European market being based off current Mercedes front-drive platform technology.
Then, obviously there is the news that Infiniti is developing a new 3.7 TT V6 producing around 530+ HP to be used in a future range of IPL vehicles.
Lot more news in the article, but this all seems like very solid information. Big things are happening it seems.