I've been looking at how long each of the Japanese endings were used for and these are the results:
Original Series
Hundred and Fifty-One = 27 weeks
Meowth's Song = 10 weeks+4 weeks
Pocket Fantasy = 16 weeks
Pokémon Ondo = 11 weeks+1 week
Type Wild = 35 weeks
Riding on Lapras = 12 weeks
Meowth's Party = 24 weeks
Exciting Pokémon Relay = 15 weeks+10 weeks
Takeshi's Paradise = 6 weeks
To My Best Friend = 19 weeks
Face Forward Team Rocket = 47 weeks
Pokettari Monsutari = 35 weeks
Advance Generation
Because the Sky is There = 18 weeks+7 weeks
Polka O Dolka = 25 weeks
Smile = 31 weeks+7 weeks
Full of Summer = 9 weeks
GLORY DAY ~That Shining Day~ = 36 weeks+22 weeks
Pokémon Counting Song = 15 weeks
I won't lose! ~Haruka's theme~ = 20 weeks
Now, calculating between the first and most recent usage puts Thursday's episode at the 40th week for By Your Side ~Hikari's Theme~. That makes it the third most used ending already, 7 weeks behind Face Forward Team Rocket for consecutive usage and 18 weeks behind GLORY DAY ~That Shining Day~ for total usage.
So do you think a new ending will be coming soon?
Original Series
Hundred and Fifty-One = 27 weeks
Meowth's Song = 10 weeks+4 weeks
Pocket Fantasy = 16 weeks
Pokémon Ondo = 11 weeks+1 week
Type Wild = 35 weeks
Riding on Lapras = 12 weeks
Meowth's Party = 24 weeks
Exciting Pokémon Relay = 15 weeks+10 weeks
Takeshi's Paradise = 6 weeks
To My Best Friend = 19 weeks
Face Forward Team Rocket = 47 weeks
Pokettari Monsutari = 35 weeks
Advance Generation
Because the Sky is There = 18 weeks+7 weeks
Polka O Dolka = 25 weeks
Smile = 31 weeks+7 weeks
Full of Summer = 9 weeks
GLORY DAY ~That Shining Day~ = 36 weeks+22 weeks
Pokémon Counting Song = 15 weeks
I won't lose! ~Haruka's theme~ = 20 weeks
Now, calculating between the first and most recent usage puts Thursday's episode at the 40th week for By Your Side ~Hikari's Theme~. That makes it the third most used ending already, 7 weeks behind Face Forward Team Rocket for consecutive usage and 18 weeks behind GLORY DAY ~That Shining Day~ for total usage.
So do you think a new ending will be coming soon?