No mention of any kind of 30 seconds for newcomers.
Here is the full paragraph on quailifying from the regulations...........


12 QUALIFICATION
To start a race, a Newcomer to the TT Circuit, qualifying for the first time must complete a total of at
least 6 laps on a solo machine or 4 laps on a sidecar machine. Newcomers must have signed on,
attended a briefing and a Newcomers course tour on Saturday 26th May, and commenced practice
including completion of a speed controlled lap by the end of Tuesday practice and should have
completed 3 laps by the end of Wednesday practice, or they may be disqualified.
All competitors must have signed on and commenced practice by the end of Wednesday practice
unless the Clerk of the Course grants permission otherwise.
Competitors who have qualified to start in any previous race on the Mountain Circuit (TT or MGP)
shall be required to complete a minimum of 5 laps for solos and 3 laps for sidecars, unless the Clerk
of the Course grants permission otherwise.
A minimum of 2 laps must be completed on each machine entered, one of which must be within the
qualifying time.
Any competitor who does not attain the required number of laps or qualification time may not be
permitted into the race.
All practices will be officially timed and count towards qualification (including race day practices).
Sidecars - Sidecar drivers must qualify with the passenger with whom they intend to race. In the
event of a change of passenger the driver must requalify with the new passenger.
Qualification times
TT Superbike Race / Senior Race 20 minutes 30 seconds 110.43 mph
Sidecar TT Races 24 minutes 94.32 mph
TT Superstock Race 21 minutes 107.80 mph
Supersport Junior TT Race 21 minutes 107.80 mph
The qualification regulations will only be waived at the absolute discretion of the Clerk of the Course
whose decision will be final.