Not sure "will be" is used in this sentence correctly [closed]

WordPress 5.3 was released just a few hours ago. It will be the last major WordPress release of 2019.

I copied the above two sentences from one of the most popular blogs.

What I want to know is, is above sentence is grammatically correct or not?

I feel like it should be,

WordPress 5.3 was released just a few hours ago. It was(or is) the last major WordPress release of 2019.

because it already happened.

I think it as following sentences.

WordPress 5.3 will be released tomorrow. It will be the last major WordPress release of 2019.

WordPress 5.3 was released just a few hours ago. It was the last major WordPress release of 2019.

WordPress 5.3 was released just a few hours ago. It is the last major WordPress release of 2019.

This is grammatical, and would be used realistically near the end of 2019 (say within the last two weeks).

..................................

WordPress 5.3 was released just a few hours ago. It was the last major WordPress release of 2019.

This is not ungrammatical, but the past tense in the second sentence would not be used when commenting at a time still within 2019 (as 'just a few hours ago' almost certainly demands).

.................................

WordPress 5.3 was released just a few hours ago. It will be the last major WordPress release of 2019.

This is still not ungrammatical. Though it looks illogical, it is idiomatic (perfectly acceptable common phraseology) for

WordPress 5.3 was released just a few hours ago. There will be no further major WordPress release in 2019.