If it's a 4k player then yes. It can get bloody confusing with the terms they use. Some that upscale are 4K players, others will only accept 1080p and upscale.

When Toshiba first came out with their 70" rear projection it had 1080P everywhere on the box. It would upscale to 1080P but would not accept 1080P input. Most found out after purchasing the TV.