As well, there are only 5 in the picture (currently) and no plans (currently) to convert already delivered 777s.
The 12 357 seat -300ERs will be receiving an additional 51 seats overall. Addition of premium economy (same seats as featured the 5 high density tails) and more seats in economy. The business class cabin also be getting the new seat introduced on the high density fleet.
The -200LRs which currently have 269 seats, will be receiving an additional 31 seats overall. Same new seats the -300ERs are getting. New seat count will be 300.
Economy will be 10 abreast now.