<human>: I currently work for a company as an LMS technical trainer.  In the middle of August, I met with one of the associate vice presidents in charge of our company's e-learning division who told me that the company would be acquiring a new LMS (different than the one I train in) and gauged my interest about a possible position change. 

I was receptive and starting researching the product.  I continued to email back and forth and meet periodically with the VP, was able to gain admin access to a sandbox of the new product, started going through admin training and after a while, I was told to get my resume ready and that the job would be posted soon.

So last week, my boss asked me about this other position. I explained that the job hadn't been posted and that I didn't really have a time frame as to when this other thing might happen.  My boss said that the VP had "handpicked" me and had given him the go ahead to put in a requisition for my replacement so that I could start this new position on the 16th of December. Now, they are making the final decision on my replacement by Friday, but the VP hasn't come out and said you have the job and I don't have an official offer letter with salary or location or detailed responsibilities.

I also filled in the VP about the plans to replace me and he said he would follow up with my boss without giving any more information. He did, however, give me another project to do which will be hard to complete in a timely manner in addition to my other responsibilities.

So, my question is: should I be worried about the position I'm in or is this just a lot of behind-the-scenes corporation bullshit? Also, do I have any recourse other than just waiting?

Give me the gist of the text in a nutshell
<bot>: Got unofficially promoted to a job that was never posted and don't have an offer letter, but my other job is hiring my replacement by Friday afternoon.