Broadband Product Change ? ------Confused

[#1]

Just seen I have an email telling me my Product Change to Fibre is complete, as the engineer appointment is for this afternoon 20/10/15 PM and I am still on ADSL2+ posting this, can I assume this is a bit premature.  It is also showing in my account details as complete.
A bit confusing, even had to look at the calendar to see I was on the correct day.
From PlusNet
Here's the date you've chosen for an engineer to install your new Plusnet Fibre service:
20/10/2015 PM
Can someone from CSC tell me what this actually means.

[#2]

When things work as they should the product change is triggered at beginning of the day when it is due to happen so that everything works as it should when the engineer connects you up
So it is all working as it should  providing the engineer turns up 

[#3]

Yep, all seems well at the moment.
An engineer has been assigned to your job this afternoon, are you ok to let us know how you get on?
Matty

[#4]

Thanks for the explanation, hopefully the engineer turns up this afternoon, still think it can be a bit confusing but must admit I am easily confused.
Old age related maybe
Thanks again
@ MattyC  I will certainly let you know how it goes, will post later.
Thanks

[#5]

Update,  Engineer arrived at 5.30pm, by this time It looked like a No Show.  Kellys engineer, said he was on his way home when contacted to do this job as other engineer had been delayed.
Set up the BT modem and connected at the cabinet, so far all seems good.  Speed good on the 40/2 package.

Device Information

Firmware Version:0.9.1 2.5 v0025.0 Build 150831 Rel.61883n
Hardware Version:TD-W9970 v1 00000000
System Up Time:0 day(s) 15:34:49

DSL

Line Status:Connected
DSL Modulation Type:VDSL2
Annex Type:Annex A/L


Upstream
Downstream

Current Rate (Kbps)
2000 39973
Max Rate (Kbps)
3514 42404
SNR Margin (dB)
9.1 7.2
Line Attenuation (dB)
44.7 19.7
Errors (Pkts)
0 0
Thanks to all for help and advice.