Between November 22nd and November 24th, 1995, the seventh annual Shoshinkai trade show (also known as the Space World trade show) was held by Nintendo as a separate event from E3. During this time, Nintendo would reveal and test new products that were either already released by that time or were to come out in the near future. While this year's show did have anticipated titles to look forward to on the SNES such as Star Fox 2 and Donkey Kong Country 2, the real exciter of the event was Nintendo's next system, the Ultra Nintendo Entertainment System. Originally called the Nintendo Ultra 64, the UNES differentiated from it's predecessors in multiple ways, most notable the ability to generate 3D graphics without the need of any extra addons or chips (while the SNES did have 3D games, they required the use of chips within the individual cartridges, such as Argonaut's FX chip). Besides the obvious graphical overhaul, the UNES came with a disk-based format provided by Electronics company Philips, rather than a cartridge based one. Various games were also revealed to the public, although a good portion of footage served only as tech demos not related to the final goal. Perhaps the most popular and most hyped of all of these was Super Mario Adventure, the newest title in the Mario franchise and the first to be rendered in full 3D graphics.
Another major announcement made for the event was that of the Ultra-Online, an addon for the UNES dedicated to providing an internet service called UltraNet, meaning that players using this device could connect to the Internet through their console, upload progress from their games, catch up with the latest Nintendo news, and even play online multiplayer on games that allow it, all via a paid subscription [1]. The Ultra-Online adapter was slated to be released by late-1996, although some issues would arrive that would delay the addon past its intended release date.
The UNES was given a full price of ¥25,000 in Japan (In the US that would amount to about $250) and would be released on April 21st, 1996 in Japan, with American and European releases slated for later (though like the Ultra-Online, the UNES itself would be delayed, albeit by a lesser margin). While there was some disappointment regarding the system ditching the cartridge format and the lack of major third party titles at launch, there was still considerable support for the console both at home and abroad, and Nintendo were not ones to disappoint.
[1] think of it as an ATL version of the N64DD, which of course would not exist given the UNES' specs compared to the N64's.