@klystron2010  
And that Link is Spike, Ganon is Sombra, also Twilight is a Princess Zelda, a future prediction of S3… joke.
 
Dang it Garble.

It is written, “Only Link can defeat Ganon”.

now i am curious

@Spiritus Arcane  
Garble caused Changing Invasion.

@Background Pony #C87A  
Get out.

He received the message, but it was Garbled.

From the desk of Princess Celestia. Dear Spike, please tell Twilight Sparkle
 
Ur mum gay

@Keinaru
 
So am I. Where would Garble have ever learned to read?

I am more surprised the feral one can read.

No… I am too

@Spiritus Arcane  

 
That would make a lot of sense.

It still baffles me that this wasn’t referenced in A Canterlot Wedding, it seemed so glaringly obvious that this was intended to be the reason Twilight didn’t get an invitation until the last minute.

@Background Pony Number 17  
I doubt it will.

This season’s episode 9 is supposedly called “Sweet and Smokey”, and involves Spike and Fluttershy traveling to the Dragon Lands. It’d be hilarious if this particular scene ends up being a plot point in that episode.

@Background Pony #EA8F  
Given everything else going on, it could have just slipped Shining or Celestia’s minds about it.

Yunno what I actually just realized? If it was a message about the wedding? Wouldn’t that have been mentioned in the wedding episode?

Dear Twilight Sparkle,
 
The bombing starts in 5 minutes.

@ArtColter
 
“Also, you owe me 10 bits. Shining popped the question much sooner than you said he would. I didn’t even think he had it in him!”

@Spiritus Arcane
 
@Jarkes
 
@ArtColter
 
It’s possible! Even likely! But hasn’t been confirmed yet, so it’s to debate

“Dear Spike, please tell Twilight to reach out to Shining Armor. I am to understand that he has something important to tell her, but it is really something that should be done face-to-face, and not via message. Best regards, Princess Celestia.”
 
This would be Shining telling Twilight about his engagement to Cadance. Shining assumes that his sister received the letter, but was simply too busy to reach out to him. This is why Twilight was shocked by the wedding announcement, as she was not aware that Shining was engaged, and why Shining simply rolled his eyes at her exasperation with not being told, as she had the chance to hear it from him in the first place.
 
Admittedly, there are holes in this little headcanon, but it’s something.
 
EDIT: Apparently, this is a common fan theory. In my defense, I did not join the fandom until after Season 3, so this possibility did not dawn on me when I watched the episodes the first time around.

@Spiritus Arcane
 
That’s a pretty common theory.

I still say it was Shining and Cadance’s wedding announcement.