Don't know if they are official (these are only snippets of 30 seconds each), but here we have all the snippets of the new bonus tracks. The first one contain all the samples.
File name: Queen batch 2 remaster sampler.zip
Download link: http://www.mediafire.com/file/4mrubofn1cp8n2o
File name: 000 - 1977 - News of the world - Feelings, Feelings.mp3
Download link: http://www.mediafire.com/file/tats8rc7gfqtkjk
File name: 000 - 1978 - Jazz - Don't Stop Me Now (With Long-Lost Guitars).mp3
Download link: http://www.mediafire.com/file/a9tdw9jn8a35qu9
File name: 000 - 1978 - Jazz - Dreamer's Ball (Early Acoustic Take, August 1978).mp3
Download link: http://www.mediafire.com/file/eg91xm2n131tfar
File name: 000 - 1980 - Flash - Football Fight (Early Version, No Synths! - February 1980).mp3
Download link: http://www.mediafire.com/file/7v196kt6qcaqlxb
File name: 000 - 1980 - Flash - The Kiss (Early Version, March 1980).mp3
Download link: http://www.mediafire.com/file/s0syydldwg67uxl
File name: 000 - 1980- The Game - It's A Beautiful Day (Original Spontaneous Idea, April 1980).mp3
Download link: http://www.mediafire.com/file/l57o9gf18q3gfw7
File name: 000 - 1980- The Game - Sail Away Sweet Sister (Take 1 With Guide Vocal).mp3
Download link: http://www.mediafire.com/file/ycl4c0y5rcy8hs4
File name: 1977 - News of the world - My Melancholy Blues (BBC Session, October 1977).mp3
Download link: http://www.mediafire.com/file/bd5472x8kemc5at
File name: 1977 - News of the world - Sheer Heart Attack (Live In Paris, February 1979).mp3
Download link: http://www.mediafire.com/file/x6e114tdyjb9mxk
File name: 1977 - News of the world - Spread Your Wings (BBC Session, October 1977).mp3
Download link: http://www.mediafire.com/file/udx991yg201p10r
File name: 1977 - News of the world - We Will Rock You (Fast) (Live in Tokyo, November 1982).mp3
Download link: http://www.mediafire.com/file/lkwi0ko6moptqca
File name: 1978 - Jazz - Bicycle Race (Instrumental).mp3
Download link: http://www.mediafire.com/file/t5aa7q9l166yy23
File name: 1978 - Jazz - Fat Bottomed Girls (Single Version).mp3
Download link: http://www.mediafire.com/file/n296hrb1h6sz3rd
File name: 1978 - Jazz - Let Me Entertain You (Live In Montreal, November 1981).mp3
Download link: http://www.mediafire.com/file/m6k5xkh0hai9a32
File name: 1980 - Flash - Flash (Live In Montreal, November 1981).mp3
Download link: http://www.mediafire.com/file/ppuq2q8c2t3c222
File name: 1980 - Flash - Flash (Single Version).mp3
Download link: http://www.mediafire.com/file/gdgm6pxu0byage3
File name: 1980 - Flash - The Hero (Live In Montreal, November 1981).mp3
Download link: http://www.mediafire.com/file/oquszrlrqljbqw4
File name: 1980 - Flash - The Hero (October 1980... Revisited).mp3
Download link: http://www.mediafire.com/file/a7ibukybybbv8e3
File name: 1980- The Game - A Human Body (B-Side).mp3
Download link: http://www.mediafire.com/file/6ov6zb7936sipqn
File name: 1980- The Game - Dragon Attack (Live At Milton Keynes Bowl, June 1982).mp3
Download link: http://www.mediafire.com/file/p2yj6pyc2mvjqj1
File name: 1980- The Game - Save Me (Live In Montreal, November 1981).mp3
Download link: http://www.mediafire.com/file/xbvamso7syeseyg
File name: 1982 - Hot Space - Action This Day (Live In Tokyo, November 1982).mp3
Download link: http://www.mediafire.com/file/2fmx4co5k0vf840
File name: 1982 - Hot Space - Back Chat (Single Remix).mp3
Download link: http://www.mediafire.com/file/at2vtpbx9o8cdzf
File name: 1982 - Hot Space - Calling All Girls (Live In Tokyo, November 1982).mp3
Download link: http://www.mediafire.com/file/iv04zmk7g012i2f
File name: 1982 - Hot Space - Soul Brother.mp3
Download link: http://www.mediafire.com/file/cln7hnn1fs09hc7
File name: 1982 - Hot Space - Staying Power (Live At Milton Keynes, June 1982).mp3
Download link: http://www.mediafire.com/file/fbdqqfavv9m9334
Stone Cold Leo'82 B.R.