What to expect: Even those who don't intend to buy Steam Deck Valve can be affected by its arrival. A company spokesperson confirmed that the manual interface will replace Steam's Big Picture mode.
austinp_valve valve actuator approved the change on the steam forums. They added that the company does not know exactly when the move will take place. “Yes, we are replacing the big picture with a new deck UI,” the message read. "Although we do not yet have an ETA to subscribe to."
Most Steam users will accept an alternative to their preferred thumbnail mode. Announced in 2011 and released in Beta 2012, it is designed to give PCs a console user interface with console support when connected to a large TV. Since going back to 2015, there hasn't been much update mode. Steam Deck appears to be running a newer version of the Steam-based Linux operating system called SteamOS 3.0, which offers a better user experience than Big Picture mode, so this is a logical decision from Valve's point of view.
Following the Steam Deck announcement last week, Valve allowed customers to pre-register by paying the company a $5 deposit. Final cost as devices approach the shipping date. The first shipments are scheduled to begin in December 2021, but high demand has prompted Valve to change the availability of new pre-orders. This resulted in the gauges selling for more than $1,000 on eBay, even though the auction site says it faces a violation of its pre-purchase policy.
In other news from Steam Deck, a Valve engineer recently confirmed that the device is fully capable of playing directly via SD cards, which is good considering the device's limited storage space and the size of many current games.
Valve's Steam Deck UI has replaced Big Picture mode